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Ray Of Light [21]
2 years ago
11

X2 + 4x + 13= 0 how do you do this problem

Mathematics
1 answer:
LenKa [72]2 years ago
3 0

Answer:

well, first you'd do 13 x 4.

13x4= 52.

then do 52 times 2.

52x2= 104.

  1. 104 plus 13= there's the answer.

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Answer:

E. 18 children are buying their lunches

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8 0
3 years ago
The hypotenuse of a 45 -45 -90 triangle measures 128 cm what is the length of one leg of the triangle
erma4kov [3.2K]
This is an isosceles triangle. The definition of an isosceles triangle is a triangle with at least two congruent sides and angles. If 2 angles on a triangle are congruent (in this case 45 and 45 are two congruent angles) then triangle is isosceles. Therefore the two sides of triangle will be congruent. We know that the triangle is a right triangle because it has a hypotenuse. If a triangle has a hypotenuse then it's a right triangle. We can apply the Pythagorean theorem: a^2 + b^2 = c^2
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We can plug C in the equation:
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What do we know about the legs of the isosceles triangle? They are congruent so a and b have to be equal. From here it's simply guess and check. Will 8 work?
8^2 + 8^2 = 128
64 + 64 = 128
128=128
Yes the value 8 works so the length of two legs of the triangle is 8.
4 0
3 years ago
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